ATWOOD OSPREY

CHARACTERISTICSType Of Vessel

Rig DesignWater Depth

Drilling Depth Year of Construction

Variable Deck Load OperationMax Drilling Draft

Operating Displacement

PRINCIPAL DIMENSIONSLength

BeamPontoon

BeamDepth

Baseline to Main DeckBaseline to Pipe Rack

Baseline to Drill Floor

CAPACITIESLiquid Mud Active & Reserve

Bulk Material Sack Storage

Drill WaterFuel

Potable Water Accommodations

Deepwater, Moored SemisubmersibleF&G ExD Millennium6,000 ft. / 8200 ft. (with preset mooring)32,0002011 6,000 MT65.6 ft. or 20 m (Operational drilling draft 17m/55.7’)49,750 MT (to be verifi ed after incline)

74.4 m/244 ft.74.4 m/244 ft.108 m/354 ft.66 ft./20.1 m8.5 m/28 ft.36 m/118 ft.36 m/118 ft.48.4 m/159 ft.

15,950 bbls26,780 ft³ plus 1,1663 ft³ in cement day tank = 27,946 ft³ 2,153 ft.²21,630 bbls8,890 bbls10,900 bbls200 persons

THE ATWOOD OSPREY IS A MOORED DEEPWATER SEMISUBMERSIBLE CAPABLE OF OPERATING IN UP TO 8200’ OF WATER AND DRILL TO DEPTHS OF 32000’. THE UNIT IS CURRENTLY WORKING IN AUSTRALIA.

ATWOOD OSPREY

Note: In an attempt to continually improve our products all specifi cations are subject to change. ATWOOD OSPREY Revised 25 May 2011

www.atwd.com

MOORING SYSTEMChain12 x 3¼ inch grade RQ-4 fl ash butt welded stud link, 3,500 ft length, MBL 1,570 kipsWire24 x 3-5/8”, 6x49, 6,000 ft length, MBL 1,609 kips; Additionally - Auxilary four (4) Amclyde CTW362/52 triple combination traction winch/windlass includes twelve primary take up reels and twelve auxiliary wire take up reels. Traction winches rated to 623 kips at 51.7 fpm, 808 kips stall. Braking system is rated to the MBL of the wire. VFD controlled, 2 speed gearboxAnchors12 x 12 mt High Holding NG Stevpris (plus one spare)Winch/Windlasses Four (4) Amclyde CTW362/52 triple combination traction winch/windlass includes twelve primary take up reels and twelve auxiliary wire take up reels. Traction winches rated to 623 kips at 51.7 fpm, 808 kips stall. Braking system is rated to the MBL of the wire. VFD controlled, 2 speed gearbox.

DRILLING EQUIPMENTDrawworksNOV AHD 1000 Active Heave Drawworks System. Provides full motion compensation. 6 - GEB 22A3 air cooled AC motors 1,150 HP continuous 200% capacity parking/emergency braking in accordance with DNV-OS-E101 standardsDerrickOne (1) Loadmaster, 215’ clear working height, 2,000,000 pounds API hook load with 14 lines, Max setback 1,000 short tonsRotary TableOne (1) NOV model RST-60½ with 60½” opening, rated 45,000 ft-lb @ 5 rpm continuous, 15 rpm intermittentCrown Block Loadmaster 1,000 tons, 14 linesTop DriveNOV TDS-1000A, driven by GEB 20 AC motor, 63,000 foot pounds continuous torque, 96,000 foot pounds intermittent torque includes a PH 100 pipe handler and RBS-4 raised back-up systemOff Line Pipe Handling SystemDedicated offl ine make up area on the rig fl oor with necessary equipment required to make up and break out stands of drill pipe, casing and/or tubing simultaneously and independent of the main rotary. The system includes the following: (i) Dedicated NOV ST-120 hydraulic make up tool; (ii) Two (2) dedicated mouse holes; (iii) One (1) NOV model MHP-10-15,5X45 for 45’ Tubulars; (iv) One (1) NOV model MHP-10-15,5X60 for 60 ft.tubulars with power elevation and centralizer; (v) Two (2) NOV Model HR-IV HydraRacker with 12.5 Te lift capacity. The system includes the following: (i) 312 stands of up to 5 7/8” triple range 3 drill pipe (total 40, 560 ft; (ii) 77 stands of 6 5/8” triple range 3 drill pipe (total 10,010 ft.); (iii) 8 stands of 8” triple range 2 drill collars (total 868 ft.); (iv) 7 stands of 10” triple range 2 drill collars (total 868 ft.); (v) 5 stands of 9 1/2” drill collars; (vi) 1 stand of bottom hole assembly (110 ft.); (vii) 63 stands of up to 13 3/8” casing (total 8,775 ft.); (viii) One (1) NOV Belly board for support of 312 stands of drill pipe; (ix) Cyber base controls for pipe handling equipment operated from driller’s cabinDerrick Access BasketOne (1) Elevated Access and Maintenance BasketDrill Pipe16,000 ft, range 3, S135, 5½” OD, 21.9 lbs/foot, Tool joints are NKK 5½” FH DSTJ connections with 7” OD x 4” ID, with Arnco 300XT hardbanding; 4000’ range 3, S135, 5-1/2” OD 24.7 lbs/foot, tool joints are NKK 5-1/2” FH DSTJ Connections with 7” OD x 4” ID, with Arnco 300XT hard bandingDrill CollarsDrill Collars - 24 each 8” OD x 2-13/16” ID 6-5/8” Reg connections; 30 each 6-3/4” OD x 3” ID NC50 connections; 4 each 9-1/2” OD x 3” ID 7-5/8” Reg Connections

BOP EQUIPMENT Diverter SystemHydril FS21X60, 500psi rated on pipeFlex Joint BOP18¾” with 21” class H Clip connection, 10 degree fl exFlex Joint DiverterHydril High Angle Diverter 11-8 500 psi WPRiser ConnectorVetco HAR H-4 18¾” 10,000 psiAnnular BOPTwo (2) Hydril GX18¾” annulars, 10,000 psiRam Preventers Two (2) Hydril 18¾” compact double MPL Rams 15,000 psi and one (1) Hydril 18¾” compact single MPL Ram 15,000 psiWellhead ConnectorVetco DWHD H-4 18¾” 15,000 psiBOP Control Unit and MUX SystemHydril Multiplex BOP control system; Remote panels located in the Driller’s Cabin and Toolpusher’s offi ce; Two (2) Hydril fully redundant multiplex control Pods; two (2) MUX hose reels with 9,500 ft of armored Mux umbilical cable; one (1) Hydraulic hot line reel designed for 9,500 ft of armored 1” supply hose; one (1) Hydril BOP Test Pump; one (1) MUX Pod test stand Test stumpsTwo (2) Vetco 18¾” 15,000 psi MSP stumps, one (1) is retractableChoke & Kill Manifold15,000 psi

RISER EQUIPMENTMarine RiserEighty-eight (88) jts Aker Solutions Marine Riser Class H Clip Riser, 75 ft each, 21”OD 0.875” wall thickness, two (2) C&K lines, two (2) Hyd lines, one (1) Mud boost lineRiser Pip Joints5’, 15’, 25’, 50’Slip JointsTwo (2) Aker Kvaerner Class H Clip Telescopic Joint Assembly, 21” OD Telescoping Joint x 60 ft strokeRiser Tensioning System

Six (6) NOV Direct (In-line) Riser Tensioners, 50’ stroke, 3,600 kip total capacity, one (1) NOV Tensioner control system with two (2) control panels located in the Drillers cabin and cellar deckNitrogenOne (1) Air Products Nitrogen Generator

MUD SYSTEMMud Pumps Four (4) x Lewco mud pumps model W-2215 triplex, 7,500 psiShale ShakersSix (6) x Derrick Dual Pool Model 628 shale shakersDegasserThree (3) x Burgess Magna-Vac Model 1500 degasser, 1,000 gpm eachMud Gas SeparatorOne (1) x Mud Gas Separator (Poorboy) 48” diameter x 17’ Gumbo BoxOne (1) x Derrick Flo-Line Primer II, with gumbo chain scalper unitAgitatorsSixteen (16) x Brandt agitatorsMud GunsSixteen (16) x Venturi type mud guns

POWER SYSTEMMain AC Electrical System11 kVAC distribution system for all AC rig pwr Generators - four (4) x ABB model AMG 0710LT08 LSE, 6,000 kVA, 60 HZ, Diesel Engines - four (4) x Caterpillar C280-16, output 4,800 eKW each, at 900 rpmEmergency AC Electrical SystemGenerator one (1) x Kato 1,250 eKW 480 VAC, at 1,200 rpm generator with independent motor control center for essential services; Engine one (1) x Caterpillar 3516B direct injection, turbo-charged, after-cooled, marine generator set.

AUXILIARY EQUIPMENTCranesTwo (2) Seatrax Series 108 Model S10832, 170 ft booms, 230 kips at 82 ft staticRiser Gantry Cranefor handling drilling riser equipped with 2 x 25T main hooks and a 2 x 20T auxiliary hookTubular Gantry Cranefor handling drilling tubulars, equipped with 2 x 10T main hooks with provision to change out hooks to 8T magnetsRiser TransportationOne (1) 50 tonne Riser Catwalk Machine is provided to transport riser equipment from the Riser Gantry CraneBOP TransporterOne (1) 425T transporter to handle and test the BOP Stack in one piece. Travel is from the BOP storage position to well centerBOP Gantry CraneOne (1) 250T Crane to move the BOP and LMRP from their main deck storage and test carts to the BOP transporterBOP Underhull Guidance SystemOne (1) BOP underhull guidance system to stabilize and guide the BOP stack while raising or lowering it through the splash zoneSubsea Tree Handling SystemOne (1) x Transporter to move trees from storage to under the rotary. Rated capacity 100 MTLifeboats6 x 70 person capacity, totally enclosed motor propelled survival craft (TEMPSC)Rapid Deploy Rescue CraftOne (1) x Norsafe 6.55 meter MAKO 655 Diesel Jet maximum capacity six (6) personsExtinguishersOne (1) x lot portable as per USCG/Petroleum (Submerged Lands) act requirementsFixed Fire Systemwater mist extinguishing systemGas Detection SystemKongsberg addressable system integrated into the Vessel Management System with H2S and LEL sensorsFire Detection SystemKongsberg addressable system integrated into the Vessel Management System with a mix of smoke, rate of rise, UV (heat) and manual call pointsHole Position IndicatorKongsberg HiPap - Acoustic Positioning System complete with differential tilt transponderDrilling Instrumentation/ControlOne (1) NOV Drillers Control Cabin w/ three (3) operators stations / chairs w/safety glass & guards. Drilling control & data acquisition /monitoring system: Mud pump control systemDrilling data hub monitoringMud pit data monitoring C & K Manifold Instrumentation CCTV system – Hernes color cameras and monitorsHelideckSteel 83’ x 83’ octagon rated for 14.6T, designed to accommodate an EH-101 helicopter in accordance with CAP 437 design parameters.Water Distillation UnitThree (3) Alfa-Laval Desalination Unit Model Dolphin 70 with booster heater, 19,800 gpd eachOily Water separatorOne (1) Coffi n ULTRA-SEP US-5000 with monitor and strip chart to comply with 15ppm discharge requirementsSewage treatmentTwo (2) Orca 11A-165 sewage treatment units with 150 man capacity per unit complying with MARPOL and USCG requirements